Raise the roof with Wolfson's DAC for car stereos Product News 11/29/2004 Post a comment Wolfson Microelectronics plc is addressing the growing in-car DVD player market with a new version of its WM8718 differential stereo digital-to-analog converter (D/A converter), which features improved audio quality and smaller packaging.
Austriamicrosystems lässt LEDs blitzen News & Analysis 11/29/2004 Post a comment Eine intelligente Ladungspumpe für Blitz-LEDs in Kamerahandys hat der Analogelektronik-Spezialist Austriamicrosystems vorgestellt. Dem Unternehmen zufolge handelt es sich um das weltweit erste Produkt dieser Art.
International workshop on reversible computing Power DesignLine Blog 11/29/2004 Post a comment Plans for the first international workshop on reversible computing continue to develop. I just got a confirmation from Charles Bennett of IBM, who was the original founder of the field. Charlie is the biggest "rock star" in reversible computing; he's greatly admired and respected by all of us.
Primary-side switch enhances off-line designs Product News 11/27/2004 Post a comment STMicroelectronics' newest primary-side switch for off-line, low power AC/DC converters, the VIPer53E, touts an extended VDD range of 9-18 volts versus 9-14.5 volts for its VIPer53 (increased range implemented by eliminating an internal error amp) for improved flexibility in transformer design. The VIPer53E serves as an alternative to the VIPer53 when a power supply requires only secondary regulation.
Chip set delivers cool power solutions Product News 11/26/2004 Post a comment International Rectifier's new MOSFET-with-controller chip set, featuring four new high- efficiency DirectFET power devices designed to keep operating device temperatures and real estate requirements in tow, is optimized for primary-side and full-bridge DC/DC converter topologies. It's suited to applications that range from bulk 48-volt conversion for system boards up to 220 watts to powering 250-watt RF amplifiers in a base station system.
Signal conditioning compensates for bridge sensor errors News & Analysis 11/24/2004 Post a comment Offset and span are the fundamental parameters that describe how bridge sensors function, writes this TI amplifier guru in the November Planet Analog magazine. Offset is the output of the sensor without any applied stimulus. For an ideal bridge all the resistance elements would be exactly matched and the offset would be zero, he say. In reality, the offset can be a significant percentage of the sensors full scale output (FSO). A typical offset of 15 percent is common for many sensor types. Here'
IR-linked sensor simplifies temperature monitoring News & Analysis 11/24/2004 Post a comment It's difficult to obtain the temperature of a circuit component whose potential is several tens of volts from ground, and the job becomes harder as that voltage increases, write Maxim's applications team. Temperature measurements in high-EMI environments are also difficult, they say. A good solution for such cases is to implement a temperature probe linked to the readout location only by an infrared (IR) signal. The provision of power for the sensor can be simplified by minimizing power consumpt
Dual Analogue Switch - sub-0.5-Ohm low-voltage device Product News 11/24/2004 Post a comment The MightyMUX ISL84684 is a true bi-directional, ultra-low resistance, low-voltage, dual single-pole double throw (SPDT X 2) analogue signal switch intended for use in cellphones, smartphones, PDAs and other portable battery-powered products.
Epson's ICs make building Internet cameras simple Product News 11/24/2004 Post a comment The latest addition to Epson Europe Electronics GmbH's line-up of network camera controller ICs feature a built-in JPEG encoder and camera interface, enabling users to easily and inexpensively build a network camera simply by connecting a camera module to the controller.
ADI expects weak quarter after sales fall sequentially News & Analysis 11/23/2004 Post a comment Analog Devices Inc. (ADI) reported net earnings of $132 million, or 34 cents per share, on sales of $632 million for the fourth 2004 fiscal quarter ended Oct. 30, compared to $169 million, or 43 cents per share on sales of $717.8 million the previous quarter and $88 million, or 23 cents per share on sales of $557.5 million in the year-ago quarter.
ADPCM Processor - has eight full-duplex channels Product News 11/23/2004 Post a comment An eight full-duplex channel, ADPCM processor which follows the G.726 ITU Standard for ADPCM compression for 40k, 32k, 24k and 16k bitrates with selectable «-law and A-law input/output, the Atelic AT1008F chip from Steadlands can operate on 16 channels of PCM to ADPCM compression, 16 channels of ADPCM to PCM decompression, 8 channels of full-duplex operation in an 8KHz frame basis, or any combination of M-channels of compression plus N-channels of decompression when M+N is les
Triple output DC/DC converter regulates voltage precisely for LCDs Product News 11/23/2004 Post a comment Maxim's triple-output DC/DC converter is packaged in a low-profile TSSOP. It provides the regulated voltages required by active matrix, TFT liquid crystal displays. One high-power DC/DC converter and two low-power charge pumps convert the +3.3V to +5V input supply into three independent output voltages.
Infineon grows its own --nanotubes Product News 11/23/2004 Post a comment Infineon Technologies achieved a breakthrough when researchers constructed the world's smallest nanotube transistor, with a channel length of only 18 nm. The most advanced transistors currently in production are almost four times this size.
Ready your power supplies for medical electronics Design How-To 11/22/2004 Post a comment There can be few more critical applications for power supplies in electronic equipment than in the field of medical electronics. Power supplies must not only deliver the specified electrical performance but must also meet stringent specifications with respect to isolation in order that patients and medical staff are protected from the risk of electric shock.
Can You See Me Now? Ten-line EMI Filter Protects LCD Lines Product News 11/22/2004 Post a comment STMicroelectronics NV has developed an electromagnetic interference (EMI) filter for LCD driver lines. It will be used in mobile, computing and consumer applications that are subject to increasing interference from wireless applications such as cell phones and Bluetooth connections.
Design-for-manufacturability a must Design How-To 11/22/2004 Post a comment MEMS devices require a clear design-for-manufacturability strategy that establishes concurrent-design principles through a common CAD framework. Detailed process and material-property characterization early in the design phase can save enough time to lead to low-cost volume manufacturing of MEMS. Toward this end, a comprehensive, integrated suite of MEMS design tools that incorporates a top-down design methodology with reusable parametric libraries of MEMS components, standard MEMS package libra
PC-based tools lower the barrier to MEMS Design How-To 11/22/2004 Post a comment Although dedicated suites of MEMS design tools are becoming available, they can be priced beyond the reach of many small companies that are innovating in this growing area. As an alternative, low-cost PC-based IC tools are being used to design microelectromechanical systems as well as ICs.
Retasking automotive sensors Design How-To 11/22/2004 Post a comment To reduce the development cycle of MEMS inertial sensors destined for commercial applications, it is possible to reuse technologies developed for automotive products. This approach confers the added benefit of keeping the same high quality level as automotive products. As a result, commercial low-g accelerometers have spun off from the automotive realm to come very close to achieving shorter design cycles and higher quality as well as lower cost.
Process builds more sensitive structures Design How-To 11/22/2004 Post a comment A surface micromachining technology for building microelectromechanical sensor and actuator systems in silicon stands out for its ability to fashion suspended structures that are anchored to the substrate by highly compliant springs. The process flow marries steps borrowed from state-of-the-art IC technology with such dedicated MEMS operations as high-aspect-ratio dry etching and sacrificial-layer removal. Called Thelma (thick epipoly layer for microactuators and accelerometers), it is distingui
Spec it by application Design How-To 11/22/2004 Post a comment The multiorder effects of MEMS requires a well-crafted specification that is produced in a closed-loop practice shared between a MEMS device customer and an experienced MEMS manufacturer. Such a specification can spell the difference between producing a device with reasonable time-to-market and one that never reaches production.
Foundries and MEMS: Manufacturability is not Enough Design How-To 11/22/2004 Post a comment he opportunities for microelectromechanical systems (MEMS) are wide open and the technology is established. While there are no one-size-fits-all foundry solutions, customers seeking volume capability can take their pick of several competitive facilities. The key is finding a partner with the knowledge, experience and up-to-date infrastructure that can help get the product to market at the cost point most appealing to major OEMs, while ensuring manufacturability and quality.
CAD Tools Shrink The Small World for MEMS Design Design How-To 11/22/2004 Post a comment The introduction of MEMS-specific capabilities in mainstream design tools is helping pave the way to greater use of microtechnology. These tools will help companies facing miniaturization challenges to break new ground; to innovate products, devices and micromanufacturing technologies; and to broaden the use of microelectromechanical systems for a variety of applications.
MEMS Sensor Improves Drug Infusion Control and Safety News & Analysis 11/22/2004 Post a comment New MEMS devices offer the opportunity not just to lower drug dosages by enhancing delivery efficiency but also to improve the safety of drug delivery. Medication delivery errors have been reported to contribute to 7,000 deaths in the United States each year and to cost society between $76 billion and $136 billion annually. Errors include improper dosages or dosing rates, administration of the wrong medication and administration of medication by improper means.
MEMS Success Starts With Manufacturing News & Analysis 11/22/2004 Post a comment With MEMS devices being spun in volume, the importance of reliability testing has taken center stage. So says a study by the MEMS Industry Group (www.memsindustrygroup.org), which reports that nine out of 10 MEMS customers require demonstration of reliability. That finding, it's noted, does not suggest poor reliability abounds; rather, it reflects the growth of the MEMS industry, with its diversity of designs, processes and applications.
Linear Battery Chargers - single-cell and a dual cell versions Product News 11/22/2004 Post a comment Microchip announced a single-cell and a dual cell versions of a fully-integrated, charge-management controller featuring a charge-safety timer and a temperature monitor. The devices are introduced alongside the company's range of DC-DC Converters, Linear Regulators and Powersmart battery managers and monitors.
iDTV MPEG Decoder - for digital & digitised analogue signals Product News 11/22/2004 Post a comment NEC Electronics has sampled an MPEG decoder targeting the fast growing integrated digital television (iDTV) market. The µPD61123 supports inputs from both digital and digitised analogue signals, allowing the development of a low cost unified iDTV chassis for either CRT or FPD displays.
Handy-Leistungsdetektor macht sich klein News & Analysis 11/22/2004 Post a comment Den Bau von Mobiltelefonen mit höherer Leistung bei geringeren Abmessungen soll ein neuer HF-Leistungsdetektor von Analog Devices ermöglichen. Gegenüber vergleichbaren Produkten benötigt der Chip deutlich weniger Platz.
PoL Converters Provide Fast Transient Response Design How-To 11/22/2004 Post a comment Most POL converters operate in conjunction with external capacitance requiring several solid tantalum and MLC capacitors. The capacitors have a significant negative impact on cost of the power system. Some new point of load converters are designed to operate without external bulk energy storage capacitors, providing significant cost and reliability advantages.
Audio/power ICs answer call for multitiered wireless Product News 11/21/2004 Post a comment Three new audio-with-power-management ICs from Freescale Semiconductor provide OEM designers with very highly integrated one-chip solutions appropriately customized for the wide range of today's consumer wireless products. The MC13790, for low-tiered, cost-effective wireless applications such as 2G/2.5G handsets, integrates an RX/TX audio system, seven low dropout (LDO) regulators with sequencing circuitry for power management functions, and a lithium-ion/NiMH battery charger. The MC13883, a mod
Triple-output DC/DC powers TFT-LCDs Product News 11/20/2004 Post a comment Maxim Integrated Products' MAX8726 is a triple-output DC/DC converter that provides the regulated voltages required by active matrix, thin-film transistor (TFT) liquid crystal displays (LCDs). One 200-mA DC/DC stage and two 20-mA charge-pumps convert a 3.3- to 5-volt input into three independent output voltages.
Signal-conditioner chipset won't jitterbug Product News 11/19/2004 Post a comment Maxim Integrated Products Inc. said its MAX3991/MAX3992, a signal-conditioner chipset for 10-Gbits/s XFP transceiver modules, provides 0.6 unit interval (UI) peak-to-peak tolerance at the receiver and only 4 mUI rms jitter generation at the transmitter.
Summing the errors: Voltage offsets revisited News & Analysis 11/17/2004 Post a comment It's starting to feel like the ant colony that invades your house in the springtime. Once you identify one, you can identify two and then three. Soon they're all over the place! We guess it's the same for input voltage offset. Bill Klein is back, taking calls and responding to readers' comments on all those nasty little things.